Duplicated Rigid Body Chain breaks when animated

I’m new to blender and am trying to animate Rigid Body wrecking ball, but the chain breaks.

I followed this YouTube tutorial, but I have multiple wrecking-ball-and-cubes setup. I made a similar setup like in the video, but then duplicated it the second time and need several of these setup, but each should be played one after another. All wrecking ball setups work fine without animation, but when I try to animate the second setup, the chain breaks. For animating all the parts, I used Ctrl+L > Animation Data. Don’t know where the problem is: duplication or Animation Data feature?

Thanks.